thoughtless

1. ADJ If you describe someone as thoughtless, you are critical of them because they forget or ignore other people's wants, needs, or feelings. 不顧及他人的[表不滿]

...a small minority of thoughtless and inconsiderate people. …一小撮不顧及別人、不替別人著想的人。

It was a thoughtless remark and I regretted it immediately. 這是一句欠考慮的話，我馬上就後悔了。

2. thoughtlesslyADV 不顧及他人地[ADV with v]

They thoughtlessly planned a picnic without him. 他們考慮不周，安排了一次野餐卻沒帶上他。